update-ng: move hook loading to initialization phase (minor)
update-ng: move hook loading to initialization phase (minor)

matthieucan/debsources,vivekanand1101/debsources,devoxel/debsources,Debian/debsources,sophiejjj/debsources,oorestisime/debsources,oorestisime/debsources,matthieucan/debsources,oorestisime/debsources,zacchiro/debsources,Debian/debsources,zacchiro/debsources,matthieucan/debsources,nonas/debian-qa,vivekanand1101/debsources,sophiejjj/debsources,Debian/debsources,clemux/debsources,sophiejjj/debsources,vivekanand1101/debsources,vivekanand1101/debsources,clemux/debsources,oorestisime/debsources,nonas/debian-qa,sophiejjj/debsources,nonas/debian-qa,clemux/debsources,devoxel/debsources,zacchiro/debsources,matthieucan/debsources,vivekanand1101/debsources,matthieucan/debsources,clemux/debsources,zacchiro/debsources,devoxel/debsources,devoxel/debsources,sophiejjj/debsources,clemux/debsources,oorestisime/debsources,zacchiro/debsources,Debian/debsources,devoxel/debsources,Debian/debsources,nonas/debian-qa